Relax Pod readiness requirements for destination controller #13557
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Requiring Pods to pass readiness checks before allowing Pod to Pod communication disrupts communication in e.g. clustered systems which require Pods to communicate with each other prior to establishing ready state and allowing inbound traffic.
Relaxed the requirement and modified the workload watcher to only require that a Pod exists and is in Running phase.
Reproduced the issue with a test setup described in #13247.
Fixes #13247.